It took a while, but I got the OTA update this evening, and certain problems were clearly addressed. The one that bugged me the most was the green bar that shows up when playing certain videos. That's gone. Other apps that were unstable under Preview 2 are still glitchy, but better now. That's all I've noticed so far.
I've been incredibly tempted, but waiting to hear reports.
Out of curiosity, what does the M previews even do to the player?
I'm very interested in this release, although I haven't been following like a lot of people I'm sure. It seems huge, and IMO my AndroidTV is pretty useless at the moment, so I'm hoping it'll go a way towards changing that.
Is google cast working on M yet?
Is Sling TV working in the final preview? It was very bad before.
I don't think the OTA update has rolled out yet, has anyone flashed yet?